Catalysts containing per-ortho aryl substituted aryl or heteroaryl substituted nitrogen donors

US6844446B2 · kind B2 · utility

Assignee

• Eastman Chemical Company · US

Inventors

• Leslie Shane Moody · Johnson City, US
• Peter Borden Mackenzie · Murrysville, US
• Christopher Moore Killian · Jonesborough, US
• Gino Georges Lavoie · Kingsport, US
• James Allen Ponasik, Jr. · Bristol, US
• Thomas W. Smith · Penfield, US
• Jason Clay Pearson · Kingsport, US
• Anthony G. M. Barrett · London, GB

Key dates

• Filing date: Apr 15, 2003
• Grant date: Jan 18, 2005
• Expiry date: Apr 29, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/16
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Catalyst compositions useful for the polymerization of olefins are disclosed. These compositions comprise a Group 8-10 metal complex comprising a bidentate or variable denticity ligand comprising one or two nitrogen donor atom or atoms independently substituted by an aromatic or heteroaromatic ring(s), wherein the ortho positions of said ring(s) are substituted by aryl or heteroaryl groups. Also disclosed are processes for the polymerization of olefins using the catalyst compositions.